Related Questions
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4
In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle θ. Sensitivity of inclined tube to sensitivity of Utube is equal to
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4
The bulk modulus of elasticity with increase in pressure
D. Increases first up to certain limit and then decreases
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4
When a cylindrical vessel containing liquid is revolved about its vertical axis at a constant angular velocity, the pressure
A. Varies as the square of the radial distance
B. Increases linearly as its radial distance
C. Increases as the square of the radial distance
D. Decreases as the square of the radial distance
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4
A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena contracta. The coefficient of contraction is
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4
In a depressed nappe
A. The pressure below the nappe is atmospheric
B. The pressure below the nappe is negative
C. The pressure above the nappe is atmospheric
D. The pressure above the nappe is negative
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4
Center of buoyancy is the
A. Centroid of the displaced volume of fluid
B. Center of pressure of displaced volume
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Two pipe systems can be said to be equivalent, when the following quantities are same
A. Friction loss and flow
D. Friction factor and diameter
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For manometer, a better liquid combination is one having
A. Higher surface tension
C. Surface tension is no criterion
D. High density and viscosity
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The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)
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The hydraulic mean depth for a circular pipe of diameter (d) is
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The discharge over a rectangular weir, considering the velocity of approach, is (whereH1 = H + Ha = Total height of water above the weir, H = Height of water over the crest of the weir, and Ha = Height of water due to velocity of approach)
A. (2/3) Cd × L.√2g [H1 - Ha]
B. (2/3) Cd × L. √2g [H1 3/2 - Ha 3/2]
C. (2/3) Cd × L.√2g [H1 2 - Ha 2]
D. (2/3) Cd × L. √2g [H1 5/2 - Ha 5/2]
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4
The pressure of the liquid flowing through the divergent portion of a Venturimeter
D. Depends upon mass of liquid
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The specific weight of sea water is __________ that of pure water.
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If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water
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If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be
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4
The total energy line lies over the hydraulic gradient line by an amount equal to the
C. Pressure head + velocity head
D. Pressure head - velocity head
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4
In a lock-gate, the reaction between two gates is (where P = Resultant pressure on the lock gate, and α = Inclination of the gate with the normal to the side of the lock)
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In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be
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If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its
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Flow of water in a pipe about 3 metres in diameter can be measured by
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4
The total energy line lies over the centre line of the pipe by an amount equal to
C. Pressure head + velocity head
D. Pressure head - velocity head
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4
The Francis formula for the discharge over Cipoletti weir is
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The flow in a pipe is neither laminar nor turbulent when Reynold number is
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Cavitation is caused by
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Working principle of dead weight pressure gauge tester is based on
B. Dalton's law of partial pressure
C. Newton's law of viscosity
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Choose the correct relationship
A. Specific gravity = gravity × density
B. Dynamic viscosity = kinematic viscosity × density
C. Gravity = specific gravity × density
D. Kinematic viscosity = dynamic viscosity × density
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The water pressure per metre length on a vertical masonry wall of dam is (where w = Specific weight of the liquid, and H = Height of the liquid)
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Which of the following is an example of laminar flow?
C. Flow of oil in measuring instruments
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A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. Which of the following statement is correct?
A. The pressure on the wall at the liquid level is minimum
B. The pressure on the bottom of the wall is maximum
C. The pressure on the wall at the liquid level is zero, and on the bottom of the wall is maximum
D. The pressure on the bottom of the wall is zer
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To avoid an interruption in the flow of a siphon, an air vessel is provided
D. At any point between inlet and outlet